Elecraft W2 Wattmeter

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Power & SWR LED bar graphs with peak/hold
Four power ranges with auto/manual selection
Up to 2 remote sensors with selection switch
Compact size: 1.5 x 6 x 4.5” (HWD)


1-200 W sensor for 144-450 MHz
0.1-200 W & 1-2000 W sensors for 1-54 MHz
Remote control/measurement via RS232
Overrange alarm output & amp keying control



Versatile Auto-ranging Power/SWR Meter

The Elecraft W2 wattmeter provides the fast, high-brightness LED bar graphs you need to keep track of transmitter and amplifier performance. With four power ranges (2/20/200/2000 W), the W2 can satisfy the needs of both QRO and QRP operators. The compact, attractive display unit will fit just about anywhere, requiring only 10-14 VDC and sensor cables.


Remote Sensors for Any Application

RF sensors for the W2 can be placed near the transmitter’s output, minimizing coax length. Two sensors can be connected to the W2, if required, to monitor different transmitters or ampfliers, switch-selected from the front panel. Sensors optimized for 144-450 MHz and HF-6 m are available, with two different power ranges. The sensors use standard CAT5 shielded or unshielded cables.

Amplifier Keying Control and Alarms

The W2 can be configured to generate alarm outputs at a high SWR. It also includes a fully-isolated amplifier keying cutout relay. On any alarm condition, the amp’s key line can be broken, preventing possible damage to sensitive equipment.


Remote Control and Data Measurement

The W2’s built-in RS232 port allows you to use a computer to read both power and SWR with higher accuracy, as well as to set and check alarms, turn the LEDs off, and other operations. You can use the supplied PC software, or write your own remote-control applications. The W2’s RS232 drive circuitry is intended for short cable lengths (typically 6’), but you can also use the Elecraft KUSB or other USB-to-RS232 adapters, greatly extending the control cable length when required.


Factory-Assembled or No-Soldering Kit

You can purchase the W2 assembled and tested, or as an easy-to-build, no-soldering kit at reduced cost. Our professionally written, fully illustrated assembly manual provides step-by-step instructions.

Unsurpassed Technical Support

If you have any difficulty, our technical support via telephone and the Internet will help get your W2 up and running quickly. You can also get answers to nearly any question day or night from the helpful, tech-savvy hams on our e-mail user group.


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